JPH0327141B2 - - Google Patents

Info

Publication number
JPH0327141B2
JPH0327141B2 JP27383084A JP27383084A JPH0327141B2 JP H0327141 B2 JPH0327141 B2 JP H0327141B2 JP 27383084 A JP27383084 A JP 27383084A JP 27383084 A JP27383084 A JP 27383084A JP H0327141 B2 JPH0327141 B2 JP H0327141B2
Authority
JP
Japan
Prior art keywords
circuit
line
resistor
power supply
differential amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP27383084A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61154347A (ja
Inventor
Shigeru Kawami
Takashi Tabu
Shigeo Sano
Nobuyuki Masuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP59273830A priority Critical patent/JPS61154347A/ja
Priority to CA000498503A priority patent/CA1245382A/en
Priority to CN85109745A priority patent/CN1003272B/zh
Priority to EP85116620A priority patent/EP0186214B1/en
Priority to KR1019850009858A priority patent/KR900002740B1/ko
Priority to DE8585116620T priority patent/DE3580745D1/de
Publication of JPS61154347A publication Critical patent/JPS61154347A/ja
Priority to US07/296,273 priority patent/US4872199A/en
Publication of JPH0327141B2 publication Critical patent/JPH0327141B2/ja
Priority to SG46692A priority patent/SG46692G/en
Priority to HK472/92A priority patent/HK47292A/xx
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/28—Current-supply circuits or arrangements for selection equipment at exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Meter Arrangements (AREA)
JP59273830A 1984-12-27 1984-12-27 交換機の給電回路 Granted JPS61154347A (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP59273830A JPS61154347A (ja) 1984-12-27 1984-12-27 交換機の給電回路
CA000498503A CA1245382A (en) 1984-12-27 1985-12-23 Battery-feed circuit for exchange
CN85109745A CN1003272B (zh) 1984-12-27 1985-12-26 交换机的供电电路
DE8585116620T DE3580745D1 (de) 1984-12-27 1985-12-27 Speiseschaltung fuer eine vermittlungsanlage.
KR1019850009858A KR900002740B1 (ko) 1984-12-27 1985-12-27 교환기용 급전회로
EP85116620A EP0186214B1 (en) 1984-12-27 1985-12-27 Battery-feed circuit for exchange
US07/296,273 US4872199A (en) 1984-12-27 1989-01-11 Battery-feed circuit for exchange
SG46692A SG46692G (en) 1984-12-27 1992-04-24 Battery-feed circuit for exchange
HK472/92A HK47292A (en) 1984-12-27 1992-06-25 Battery-feed circuit for exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59273830A JPS61154347A (ja) 1984-12-27 1984-12-27 交換機の給電回路

Publications (2)

Publication Number Publication Date
JPS61154347A JPS61154347A (ja) 1986-07-14
JPH0327141B2 true JPH0327141B2 (enrdf_load_stackoverflow) 1991-04-15

Family

ID=17533138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59273830A Granted JPS61154347A (ja) 1984-12-27 1984-12-27 交換機の給電回路

Country Status (9)

Country Link
US (1) US4872199A (enrdf_load_stackoverflow)
EP (1) EP0186214B1 (enrdf_load_stackoverflow)
JP (1) JPS61154347A (enrdf_load_stackoverflow)
KR (1) KR900002740B1 (enrdf_load_stackoverflow)
CN (1) CN1003272B (enrdf_load_stackoverflow)
CA (1) CA1245382A (enrdf_load_stackoverflow)
DE (1) DE3580745D1 (enrdf_load_stackoverflow)
HK (1) HK47292A (enrdf_load_stackoverflow)
SG (1) SG46692G (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5148475A (en) * 1990-04-06 1992-09-15 Harris Corporation Reduced contact resistance on a SLIC
DE69016648T2 (de) * 1990-05-11 1995-07-06 Alcatel Nv Fernmeldeleitungsschaltung.
US5333192A (en) * 1990-06-26 1994-07-26 Northern Telecom Limited Line interface circuit
JPH0568120A (ja) * 1991-09-05 1993-03-19 Fujitsu Ltd 給電回路
US5659610A (en) * 1994-09-28 1997-08-19 Lucent Technologies Inc. Battery feed circuit
DE19636954B4 (de) * 1996-09-11 2005-08-18 Infineon Technologies Ag Teilnehmerschaltung
FI104933B (fi) * 1997-11-18 2000-04-28 Nokia Networks Oy Tilaajajohtoliitäntäpiiri
JP3183257B2 (ja) * 1998-05-26 2001-07-09 日本電気株式会社 公衆電話機用加入者回路

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071879A (en) * 1976-11-19 1978-01-31 Gte Sylvania Incorporated Reversible current apparatus
NL7810086A (nl) * 1978-10-06 1980-04-09 Philips Nv Voedingsbrug voor een abonneestroomloop.
JPS55150658A (en) * 1979-05-14 1980-11-22 Nec Corp Current supply circuit
US4283604A (en) * 1979-06-04 1981-08-11 Tellabs, Inc. Current source circuits with common mode noise rejection
FR2488087A1 (fr) * 1980-07-31 1982-02-05 Bonis Marc Circuit de telealimentation pour liaison bifilaire analogique
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4456991A (en) * 1981-09-18 1984-06-26 International Telephone And Telegraph Corporation Telephone line circuit and system
US4600811A (en) * 1982-12-28 1986-07-15 Nec Corporation Subscriber line interface circuit
JPS59125157A (ja) * 1982-12-30 1984-07-19 Fujitsu Ltd 給電回路
US4539438A (en) * 1983-08-22 1985-09-03 Northern Telecom Limited Active impedance transformer assisted line feed circuit with supervision filtering
US4532381A (en) * 1984-02-13 1985-07-30 Northern Telecom Limited Active impedance line feed circuit
US4612417A (en) * 1984-07-27 1986-09-16 At&T Bell Laboratories Electronic battery feed circuit for telephone systems
JPS61141258A (ja) * 1984-12-14 1986-06-28 Fujitsu Ltd 電子化給電回路

Also Published As

Publication number Publication date
US4872199A (en) 1989-10-03
EP0186214A3 (en) 1986-12-30
DE3580745D1 (de) 1991-01-10
KR860005518A (ko) 1986-07-23
JPS61154347A (ja) 1986-07-14
SG46692G (en) 1992-06-12
CN85109745A (zh) 1986-08-06
CN1003272B (zh) 1989-02-08
EP0186214B1 (en) 1990-11-28
EP0186214A2 (en) 1986-07-02
CA1245382A (en) 1988-11-22
HK47292A (en) 1992-07-03
KR900002740B1 (ko) 1990-04-28

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